Bad Customer Service

I called in last week to advise MWeb that they have deducted more than what they should have. A lady advised me that they will escalate this to the billing department and i will received a call within the next 48 hours. No one has called back. I called in now and waited 10mins to get through to an agent. I also advised the agent can they call me back if the line cuts as I've been waiting for 10mins on the phone call. The lady by the name Val Arries advised that Mweb cannot call they customers back when the line cuts. This is the bad customer service you get from Mweb. I'll be taking my service with another ISP.